<div id="content">
    <?php
    if($connected == 2) {
        echo '<div id="mess"><p>Mauvais login ou mot de passe !</p>';
        echo '<p><a href="index.php?a=connexion">Retour</a></p></div>';
    }
    else {
        ?>
        <form class="well" action="" method="POST">
            <h2>Connexion</h2>
            <label for="login">Email:</label>
            <input type="text" name="email" id="email" />
            <br />
            <label for="pass">Mot de passe:</label>
            <input type="password" name="pass" id="pass" />
            <br />
            <input class="btn btn-primary" type="submit" value="Connect !" />
        </form>
        <?php
    }
    ?>
</div>